Fire extinguisher



NOV. 22, 1932. v Q W GILBERT l 1,888,316

FIRE EXTINGUISHER Filed April 28, 19:50

IN VEN TOR.

Patented Nov. 22, 1932 'UNITED STATES PATENT ori-"1er,

VICTOR GEORG-E WILLIAM GILBERT, OF LONDON, ENGLAND, ASSIGNOB. 10AMERICAN- LA FRANCE AND FOAMITE CORPORATION, OF NEW YORK, N. Y., A.ACORPORATION NEW YORK FIRE EXTINGUISHER Application filed April 2S,1930, Serial No. 447,875, and in Great Britain April 3,0, 1,929.

The object of the invention is an improved foam extinguisher of theinvertible type, in which an externally operated stopple is adapted toclose both the discharge outlet and the so-called inner container andhaving novel provision for mounting the inner container, moreparticularly in its relation tothe discharge nozzle, for securing theinner container against displacement when the apparatus is invertedand'for facilitating removal of the stopple or valve member whichnormally closes that container, all as illustrated in preferred form inthe accompanying drawing.

Fig. 1 is a vertical section of an extinguisher having the inventionapplied and Fig. 2 a horizontal section on the line II-II of Fig. 1.

The outer solution container 1 is provided with the usual closure cap 2having threaded connection with the neck casting 3, which is preferablyarranged to support the inner removable container 4. To that end a seatstructure 5 in the form of a ring is located below the neck opening andspaced from it by depending cage bars 6 which, together with thestructure 5, may be cast integrally with the neck. The bars are setapproximately flush with the neck opening so as to leave it entirelyunobstructed to receive a stopple or valve-member 6a of a diametersubstan- '1 itthtfu kTht 1e' tml y equa O a O le nec e S Opp tudinalmovement when the extinguisher is is manually operated by anyappropriate means, being shown attached to a stem 7 which passes througha gland 8 in the cap 2 and terminates in a knob 9 having a bayonet slot10 for engagement with pin 11 when the knob is depressed.

The ring structure 5 constitutes a combined support, for the innercontainer, and a discharge fitting and in its latter function embodiesan enlargement 12 which projects inwardly, to bring its upper faceWithin the projection of the neck opening and beneath the stopple, andwhich has a discharge outlet 18 in that face communicating with thenozzle 14C. The nozzle is also a part of the neck-ring casting andprojects outwardly to and through the dome of the outer container. Byreason of the large diameter stopple which the neck and the bars 6accommodate, the top face of the enlargement 12 can accommodate anVadequately sized foam outlet without encroaching unduly v`on the spacewithin the ring which is roccupied by the inner container 4 and thelatter is formed Vwith a groove or reentrant portion ltrex- 'tending`its full length and dimensioned rto embrace or accommodate enlargement12, asy

indicated, so asto permit the container to be withdrawn through the neckopening.

The top face of the ring structure consti- Voccupies the desiredposition with respect .to

the seat face of the ring structure thebottom of the spacer ring seatson a shelf or a number of lugs 17 which project inwardlyfrom the lowerend of ring V5. lThe depth of rings 5 and 16 is usually'adequate tosteady the container 4 against lateral movement but other provision forthat purpose may be made if desired.

To hold the inner container against longiinverted, I provide acompression spring 18, the lower end of which bears against a crossbar19 arranged just below the top of container land by means of which barthe container can readily be withdrawn for cleaning. -In the preferredform illustrated the upper end of spring 18 bears against and may besecured to the face of the stopple so as to lift the same and open thecontainer and outlet as soon as stem 7 is released, while Vstill holdingthe container against its seat in the ring structure. In this respectspring 18 serves to assist the usual valve spring 20.

Having now described my invention, I claim:

1. In a fire extinguisher the combination of an outer container, aninner container supporting-member therein, a stopple adapted to seat onan upper face of said member, said face having an outlet for foamdischarge, an inner container adapted for support on said member andhaving a seat arranged for engagement with said stopple When the same 1s1n engagement with said surface.

2. In a lire extinguisher having inner and outer solution containers,the combination of a neck casting for the latter having a. dependingring structure adapted to support said inner container and a neckopening above said ring structure through Which said inner container isremovable, an externally operated stopple adapted to engage and closethe inner container and also to seat on the upper surface of saidstructure and a discharge nozzle connected with an outlet in the seatface of said ring structure and also closed b said stopple.

' 3. A re extinguisher comprising an outer solution container, a neckcasting therein having depending cage bars and a ring supported thereby,an inner container arranged to seat on said ring with its upper endbelow the neck opening, a discharge outlet in the upper face of saidring,a stopple of substantially the full diameter of the neck adapted tooverlie and close both the inner container and the discharge outlet andmeans for holding the inner container against its seat when theextinguisher is inverted.

4. The combination set forth in the preceding claim in which the innercontainer rests with its upper end flush with theV upper surface of saidring and is held against its seat by a sprin 5. In a re extinguisher,the combination of inner and outer solution containers, said outercontainer having a neck opening for the insertion of the inner containerand also having a seat structure depending from the neck arranged tosupport said inner container, a stopple for the latter, a spring urgingthe stopple toward its open position and also engaging the innercontainer to hold it on its seat, a closure cap for said neck openingand stopple operating means carried thereby.

6. In a fire extinguisher the combination of an outer solution containerhaving a neck opening and a closure cap therefor, an inner containerinsertable through said opening, a stopple and means normally holdingthe same in position to close the inner container and a spring bearingon the latter to hold the same against displacement When theextinguisher is inverted, said spring also arranged to open the stopplewhen said holding means is released.

7. In a lire extinguisher the combination 0f an outer container having aneck opening, an inner container insertable and removable through saidopening, said inner container having a reentrant portion or grooveextending the length thereof, a foam outlet member In testimony whereof,I have signed this 7o specification.

VICTOR GEORGE WILLIAM GILBERT.

